The email addresses and passwords of 412 million accounts have been leaked after the meet-up website Adult Friend Finder and sister sites were hacked. At least 5.2 million UK email addresses were stolen in the breach, which also included the date of last visit, browser information, some purchasing patterns.

Adult Friend Finder describes itself as "one of the world's largest sex hook-up" websites, with more than 40 million active users. The hack, against its parent company Friend Finder Networks, also involved data from Cams.com, a live video sex site, and Penthouse.com, an internet porn site that was sold in February.

Friend Finder Networks operates “one of the world’s largest sex hookup” sites Adult Friend Finder, which has “over 40 million members” that log in at least once every two years, and over 339m accounts. It also runs live sex camera site Cams.com, which has over 62m accounts, adult site Penthouse.com, which has over 7m accounts, and Stripshow.com, iCams.com and an unknown domain with more than 2.5m accounts between them.